What is/do you have a plan for how our characters all know one another? Are they one team of erasers that already knows one another, or just a bunch of erasers that are thrown together on a mission-by-mission basis?

I always find it's helpful to work out vague character relationships before the RP begins - "Billy-bob dislikes Shanequa because x" - "Shanequa doesn't know Billy-bob can't stand her" etc.